S+ V/ BE+ SO + ADV/ ADJ+ THAT + A CLAUSE S+ V/ BE+ TOO ADV/ ADJ+...
2. S+ V/ be+ so + adv/ adj+ that + A clause S+ V/ be+ too adv/ adj+ to V S+ be+ not Adj enough+ to V She works so hard that she feels exhausted. The boy is so young that he can solve the problem. The boy is too young to solve the problem The boy is not old enough to solve the problem